Nie zapisuje gracza do zmiennej

Mam tu taki event lecz nie zapsiuje mi go

on join:
    if {praca.%player%} is not set:
        set {praca.%player%} to "{@bezrobotny}"
        add player's name to {lista::*}
on first join:
    add player's name to {lista::*}
command /info [<offlineplayer>]:
    trigger:
        if {lista::*} contains player's name:
            open chest with 3 rows named "{@infoPrefix}" to player